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Experimental And Numerical Study Of The Unsteady Behavior Of Planar Buoyant Plumes And Axisymmetric Diffusion Flames
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Book Synopsis Experimental and Numerical Study of the Unsteady Behavior of Planar Buoyant Plumes and Axisymmetric Diffusion Flames by : Yan Dong
Download or read book Experimental and Numerical Study of the Unsteady Behavior of Planar Buoyant Plumes and Axisymmetric Diffusion Flames written by Yan Dong and published by . This book was released on 1999 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Numerical Study of the Near-Field Unsteady Dynamics of Planar Plumes by : M. C. Soteriou
Download or read book Numerical Study of the Near-Field Unsteady Dynamics of Planar Plumes written by M. C. Soteriou and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Experimental and Numerical Investigation of a Developing Buoyant Plume by : Douglas L. Reeder
Download or read book An Experimental and Numerical Investigation of a Developing Buoyant Plume written by Douglas L. Reeder and published by . This book was released on 1992 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Experimental and Numerical Study of Diffusion Flames in Cross-flow and Quiescent Environment at Smoke Point Condition by : Sien Fong Goh
Download or read book An Experimental and Numerical Study of Diffusion Flames in Cross-flow and Quiescent Environment at Smoke Point Condition written by Sien Fong Goh and published by . This book was released on 2003 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A CFD Investigation of Turbulent Buoyant Helium Plumes by : William Chung
Download or read book A CFD Investigation of Turbulent Buoyant Helium Plumes written by William Chung and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Applied mechanics reviews written by and published by . This book was released on 1948 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Experimental and Numerical Study of Aromatic Species Formation in Counterflow Diffusion Flames by : Martina Baroncelli
Download or read book Experimental and Numerical Study of Aromatic Species Formation in Counterflow Diffusion Flames written by Martina Baroncelli and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis International Aerospace Abstracts by :
Download or read book International Aerospace Abstracts written by and published by . This book was released on 1999 with total page 974 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Experimental and Numerical Study of Free-convection Diffusion Flames by : Steven Francis Malary
Download or read book An Experimental and Numerical Study of Free-convection Diffusion Flames written by Steven Francis Malary and published by . This book was released on 1984 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NASA Technical Memorandum written by and published by . This book was released on 1994 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Experimental Investigation of Transition in Plane Plumes Above a Horizontal Heat Source by : Robert George Bill
Download or read book An Experimental Investigation of Transition in Plane Plumes Above a Horizontal Heat Source written by Robert George Bill and published by . This book was released on 1974 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Numerical Study of an Unsteady Diffusion Flame by : K.J. Laskey
Download or read book A Numerical Study of an Unsteady Diffusion Flame written by K.J. Laskey and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Investigation of Axisymmetric Buoyant Turbulent Diffusion Flames: Flow Structure and Radiation Properties by : S-M. Jeng
Download or read book An Investigation of Axisymmetric Buoyant Turbulent Diffusion Flames: Flow Structure and Radiation Properties written by S-M. Jeng and published by . This book was released on 1984 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dynamics of Densimetric Plumes and Fire Plumes in Ventilated Tunnels by : Lei Jiang
Download or read book Dynamics of Densimetric Plumes and Fire Plumes in Ventilated Tunnels written by Lei Jiang and published by . This book was released on 2017 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis investigates experimentally, theoretically and numerically the critical ventilation velocity in longitudinal ventilated tunnels in case of a fire. The critical velocity is defined as the minimum ventilation velocity that confines the front of the backlayer of harmful buoyant gases downwind of the source of emission. The fire is first modeled by a release of light gas in ambient air. In the experiments, the light fluid is an air/helium mixture. A simple mathematical model, based on the classical plume study, is formulated to interpret the variations of the critical velocity as a function of the source conditions (momentum and buoyancy fluxes and geometry). A good agreement is observed between the experimental results and the theoretical predictions for both the momentum-driven and buoyancy-driven releases. In addition, the non-Boussinesq effects, i.e. related to large differences between the densities of the buoyant plume and the ambient fluid, could be suitably modeled. Subsequently, the difference between a buoyant plume and a fire is studied, by combining experiments and numerical simulations. The reason for the appearance of the so-called 'super-critical' velocity, a ventilation velocity that becomes independent of the heat release rate when it becomes large, is discussed. It is shown that small fires can be reliably modeled as buoyant densimetric plumes released at ground level. The dynamics induced by larger fires require instead the modeling of large flames and hence a volumetric source of heat and buoyancy within the tunnel. In the simulation of fires, when the heat release rate is increased, the volume of combustion also increases, but the critical velocity remains nearly constant, which validates the appearance of the 'super-critical' velocity. The effect of tunnel inclination on the critical velocity is then studied. The influence of slope (defined as negative when the entrance of fresh air is at a lower elevation than the source) on the movement of smoke is mainly related to the role of the component of buoyancy along the tunnel axis. A positive slope helps the formation of the backlayer, while a negative slope helps reaching the critical condition. However, this effect depends on the source condition. Our experiments and numerical simulations on densimetric plumes suggest that the dynamical condition at the source affects the critical velocity of a buoyant plume: when the buoyant plume is momentum-driven, the influence of slope is small; when the buoyant plume is buoyancy-driven, the influence of slope is large. This behavior can be well described by a theoretical model based on the previous model of the critical velocity in a horizontal tunnel. These results have been extended to the case of fires by conducting numerical simulations and there is again a good agreement between the observed results and the theoretical model. In particular, the ratio of the critical velocities obtained for an inclined and an horizontal tunnel is independent of the power of the fire. Finally, the effect of vehicular blockage on the critical velocity is studied experimentally and numerically. The vehicles are modeled by blocks of different sizes placed upstream of the buoyancy or fire source. It is shown that only the block close to the source affects the critical velocity, whereas the effect of other blocks of the same size located further upstream is negligible. As the fire-blockage distance becomes larger, the critical velocity changes and becomes close to the value in an empty tunnel. The relative position between the blocks and the fire source has large influence on the critical velocity. When the blocks are placed at the center laterally, the ventilation flow cannot reach the fire plume directly, a larger critical velocity is needed compared with that in a corresponding empty tunnel. [...].
Book Synopsis An Experimental Study of an Axisymmetric Turbulent Buoyant Plume and Investigation of Closure Hypotheses by : Aamir Shabbir
Download or read book An Experimental Study of an Axisymmetric Turbulent Buoyant Plume and Investigation of Closure Hypotheses written by Aamir Shabbir and published by . This book was released on 1987 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Some Experimental Aspects of Turbulent Diffusion Flames and Buoyant Plumes from Fire Sources Against a Wall and in a Corner of Walls by : Yuji Hasemi
Download or read book Some Experimental Aspects of Turbulent Diffusion Flames and Buoyant Plumes from Fire Sources Against a Wall and in a Corner of Walls written by Yuji Hasemi and published by . This book was released on 1983 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: